How to Sideload Apps to your Amazon Fire TV using a Mac with OS X

Sideloading allows you to install apps to your Fire TV that are not available in the Amazon Appstore. There are numerous apps in the Google Play store that may work on the Fire TV that have not been officially ported over. You can download these apps using online APK downloaders. There are also apps like XBMC, which we will be using in this guide, which are not available on any appstore and can only be installed by sideloading.